To query a user's mobile phone and WeChat number, the following SQL statement can be used.

To intuitively understand join operations, we first build a simple example database that stores grocery items and their corresponding categories. The category information is stored in the categories ...

To use the library, simply incorporate the units into your projects, implement migrations, and execute the migrator. It's that simple. To get started quickly, please take a look at the sample codes ...

Bookings: To store information about booked tables in the restaurant including booking id, date and table number. Orders: To store information about each order such as order date, quantity and total ...

Ukraine's Ministry of Defence is planning to speed up the exchange of information on Russia's military technologies, in particular by creating a transparent database of trophies and providing access ...

Sign up for the Slatest to get the most insightful analysis, criticism, and advice out there, delivered to your inbox daily. Shortly after the Soviet Union invaded ...

Abstract: Increasing and massive volumes of trajectory data are being accumulated that may serve a variety of applications, such as mining popular routes or identifying ridesharing candidates. As ...